3. Every machine competing must be made by the operator (no toys admitted), and it must be built along practical lines, that is, a model from which a practical man-carrying machine can be built. 4. The Committee shall have the right to reject any entry, the rejection of which they deem advisable. 5. The flights shall be accounted level flights and no allowance will be made for variation of height. 6. A trial shall be considered to have ended whenever the machine touches the ground. 7. Competitors shall decide by drawing lots the order in which they shall take their turns. 8. Any entrant not ready to commence his trial when called upon will forfeit his turn to him who is next ready, and will fall back to the end of the list. 9. The commencement of the distance flown shall in the case of machines on wheels be counted not from the starting line, but from the point which is determined by the judges as that at which such machines actually leave the ground. In the case of machines using the catapult, there shall be deducted from the total distance flown the equivalent of the initial impulse of the catapult. 10. There shall be no restrictions as to the design, size, weight, form or amount of power, but the power must be self-contained in the model. 11. All models must start from the ground. 12. Each contestant shall have three trials. 13. The longest flight in the three trials will be counted for the prize. 14. All awards shall be made to the owner of the model and not to the operator, unless by special agreement between owner and operator. 15. The contests shall cover a period of two hours, unless otherwise designated by the judges. RULES FOR CONDUCTING MODEL AEROPLANE CONTESTS PREPARED BY THE NEW YORK MODEL AERO CLUB. The officials at the distance contest will be: One entry clerk, one starter, one judge. The officials at the spectacular flight contest will be: One announcer and starter, a jury composed of three persons selected from spectators, not members of the Club. The officials at the demonstration of a lifting-power contest will be: One entry clerk, one measurer and calculator, and one judge. There will be a director in the center of the armory room to order the flights. The director will have a whistle. Each starter will have a flag. Starters will ask for the floor by showing flag. The director will order the flights as follows: Three whistles for a spectacular flight. Two whistles for a distance flight. One whistle for a lifting-power flight. Contestants must keep off the floor unless following their own machine in flight. After they have picked up their machine, they must leave the floor in the most expeditious manner. Contestants will apply to entry clerks for directions. RULES FOR MODEL AEROPLANE CONTESTS PREPARED BY THE NEW YORK MODEL AERO CLUB.